IP Library Granted Patent US 12,435,030
Granted Patent B2
US 12,435,030 · App. 18/755,058 · Granted Oct 7, 2025

PCNA inhibitors

Inventors: Linda H. Malkas (Lakeview Terrace, CA); David Horne (Altadena, CA); Robert J. Hickey (Lakeview Terrace, CA); Long Gu (Arcadia, CA)
Assignee: City of Hope
C07C233/76A61K31/167A61K31/4409A61K31/4418A61K31/4725A61K33/243A61P35/00A61P35/02C07C237/22C07D213/68C07D217/26C07D401/12
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,435,030
App. No.
18/755,058
Granted
Oct 7, 2025
Kind
B2
Abstract

Described herein, inter alia, are compositions of PCNA modulators and methods for treating or preventing cancer.

Claims (42)

1. A pharmaceutical composition comprising a compound, an anti-cancer agent, and a pharmaceutically acceptable excipient, wherein the anti-cancer agent is a platinum-based compound, topoisomerase inhibitor, EGFR inhibitor, ras inhibitor, MEK inhibitor, signal transduction inhibitor, or signal transduction modulator; and

wherein the compound has the formula:

or a pharmaceutically acceptable salt thereof; wherein

Ring A is substituted or unsubstituted phenyl or substituted or unsubstituted 5 to 6 membered heteroaryl;

Ring B is substituted or unsubstituted 1-naphthyl, or substituted or unsubstituted isoquinolinyl;

R 1 is independently a halogen, —CX 13 , —CHX 12 , —CH 2 X 1 , —CN, —SO n1 R 10 , —SO v1 NR 7 R 8 , —NHNH 2 , —ONR 7 R 8 , —NHC═(O)NHNH 2 , —NHC═(O)NR 7 R 8 , —N(O) m1 , —NR 7 R 8 , —C(O)R 9 , —C(O)—OR 9 , —C(O)NR 7 R 8 , —OR 10 , —NR 7 SO 2 R 10 , —NR 7 C═(O)R 9 , —NR 7 C(O)—OR 9 , —NR 7 OR 9 , —OCX 1 3 , —OCHX 12 , —OCH 2 X 1 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; or two adjacent R 1 substituents may optionally be joined to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;

R 2 is independently hydrogen, halogen, —CX 2 3 , —CHX 2 2 , —CH 2 X 2 , —CN, —COOH, —CONH 2 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;

R 3 is independently hydrogen, halogen, —CX 3 3 , —CHX 3 2 , —CH 2 X 3 , —CN, —COOH, —CONH 2 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;

R 7 , R 8 , R 9 , and R 10 are independently hydrogen, halogen, —CX A 3 , —CHX A 2 , —CH 2 X A , —CN, —COOH, —CONH 2 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; or R 7 and R 8 substituents bonded to the same nitrogen atom may optionally be joined to form a substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heteroaryl;

z1 is an integer from 0 to 4;

m1 and v1 are independently 1 or 2;

n1 is independently an integer from 0 to 4; and

X 1 , X 2 , X 3 , and X A are independently —Cl, —Br, —I, or —F.

2. The pharmaceutical composition of claim 1 , wherein the compound has the formula:

wherein

R 4 is independently a halogen, —CX 4 3 , —CHX 4 2 , —CH 2 X 4 , —CN, —SO n4 R 14 , —SO v4 NR 11 R 12 , —NHNH 2 , —ONR 11 R 12 , —NHC═(O)NHNH 2 , —NHC═(O)NR 11 R 12 , —N(O) m4 , —NR 11 R 12 , —C(O)R 13 , —C(O)—OR 13 , —C(O)NR 11 R 12 , —OR 14 , —NR 11 SO 2 R 14 , —NR 11 C═(O)R 13 , —NR 11 C(O)—OR 13 , —NR 11 OR 13 , —OCX 4 3 , —OCHX 4 2 , —OCH 2 X 4 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; two adjacent R 4 substituents may optionally be joined to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;

R 5 is independently a halogen, —CX 5 3 , —CHX 5 2 , —CH 2 X 5 , —CN, —SO n5 R 18 , —SO v5 NR 15 R 16 , —NHNH 2 , —ONR 15 R 16 , —NHC═(O)NHNH 2 , —NHC═(O)NR 15 R 16 , —N(O) m5 , —NR 15 R 16 , —C(O)R 17 , —C(O)—OR 17 , —C(O)NR 15 R 16 , —OR 18 , —NR 15 SO 2 R 18 , —NR 15 C═(O)R 17 , —NR 15 C(O)—OR 17 , —NR 15 OR 17 , —OCX 5 3 , —OCHX 5 2 , —OCH 2 X 5 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; two adjacent R 5 substituents may optionally be joined to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;

R 11 , R 12 , R 13 , and R 14 are independently hydrogen, halogen, —CX B 3 , —CHX B 2 , —CH 2 X B , —CN, —COOH, —CONH 2 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; R 11 and R 12 substituents bonded to the same nitrogen atom may optionally be joined to form a substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heteroaryl;

R 15 , R 16 , R 17 , and R 18 are independently hydrogen, halogen, —CX C 3 , —CHX C 2 , —CH 2 X C , —CN, —COOH, —CONH 2 , substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; R 15 and R 16 substituents bonded to the same nitrogen atom may optionally be joined to form a substituted or unsubstituted heterocycloalkyl or substituted or unsubstituted heteroaryl;

z2 is an integer from 0 to 5;

z3 is an integer from 0 to 7;

m4, m5, v4 and v5 are independently 1 or 2;

n4 and n5 are independently an integer from 0 to 4; and

X 4 , X 5 , X B , and X C are independently —Cl, —Br, —I, or —F.

3. The pharmaceutical composition of claim 2 , wherein R 4 is independently halogen, —CF 3 , —CHF 2 , —CH 2 F, —OCF 3 , —OCHF 2 , —OCH 2 F, —OH, —OR 14 , unsubstituted methyl, or unsubstituted methoxy.

4. The pharmaceutical composition of claim 3 , wherein R 14 is hydrogen or unsubstituted C 1 -C 3 alkyl.

5. The pharmaceutical composition of claim 2 , wherein R 5 is independently halogen, —CF 3 , —CHF 2 , —CH 2 F, —OCF 3 , —OCHF 2 , —OCH 2 F, —OH, unsubstituted methyl, or unsubstituted methoxy.

6. The pharmaceutical composition of claim 1 , wherein R 1 is independently halogen, —OH, —CF 3 , —CHF 2 , —CH 2 F, —OCF 3 , —OCHF 2 , —OCH 2 F, unsubstituted methyl, or unsubstituted methoxy.

7. The pharmaceutical composition of claim 1 , wherein R 2 is hydrogen.

8. The pharmaceutical composition of claim 1 , wherein R 3 is hydrogen.

9. The pharmaceutical composition of claim 1 , wherein Ring A is a substituted or unsubstituted phenyl.

10. The pharmaceutical composition of claim 1 , wherein Ring B is a substituted or unsubstituted 1-napththyl.

11. The pharmaceutical composition of claim 1 , wherein Ring B is a substituted or unsubstituted 1-isoquinolinyl, or a substituted or unsubstituted 4-isoquinolinyl.

12. The pharmaceutical composition of claim 2 , wherein the compound has the formula:

13. The pharmaceutical composition of claim 1 , wherein the compound has the formula:

14. The pharmaceutical composition of claim 1 , wherein the compound has the formula:

15. The pharmaceutical composition of claim 1 , wherein the anti-cancer agent is etoposide, camptothecin, gemcitabine, gefitinib, afatinib, or erlotinib.

16. A method of treating a disease associated with PCNA activity in a patient having said disease, said method comprising administering the pharmaceutical composition of claim 1 .

17. A method of treating cancer in a patient having said cancer, said method comprising administering the pharmaceutical composition of claim 1 .

18. The method of claim 17 , wherein said cancer is a sarcoma, adenocarcinoma, leukemia, or lymphoma.

19. The method of claim 17 , wherein said cancer is a lung cancer, colon cancer, a central nervous system cancer, brain cancer, neuroblastoma, skin cancer, head and neck cancer, melanoma, ovarian cancer, renal cancer, prostate cancer, breast cancer, mesothelioma, liver cancer, stomach cancer, esophageal cancer, bladder cancer, cervical cancer, osteosarcoma, pancreatic cancer, adrenal cortical cancer, adrenal gland cancer, colorectal cancer, testicular cancer, myeloma, B-acute lymphoblastic lymphoma, non-Hodgkin's lymphoma, Hodgkin's lymphoma, chronic leukemia, acute leukemia, glandular carcinoma, or hematoid carcinoma.

20. The method of claim 17 , further comprising administering radiation.

Continuity (8)
Continuation 17730948 · Apr 27, 2022
Continuation 17108739 · Dec 1, 2020
Continuation 16714062 · Dec 13, 2019
Continuation 15760959
Provisional Application 62340964 · May 24, 2016
Provisional Application 62313592 · Mar 25, 2016
Provisional Application 62220014 · Sep 17, 2015
Related Publication 20240343682A1 · Oct 17, 2024
References Cited (65)
US 4030910A · Johnston · 1977 [cited by applicant]
US 4269829A · Seidel et al. · 1981 [cited by applicant]
US 5783597A · Beers et al. · 1998 [cited by applicant]
US 6090854A · Epperson · 2000 [cited by applicant]
US 7067506B2 · Keegan et al. · 2006 [cited by applicant]
US 10550070B2 · Malkas et al. · 2020 [cited by applicant]
US 10913706B2 · Malkas et al. · 2021 [cited by applicant]
US 11345656B2 · Malkas et al. · 2022 [cited by applicant]
US 12054447B2 · Malkas et al. · 2024 [cited by applicant]
US 20010049374A1 · Steele et al. · 2001 [cited by applicant]
US 20070155727A1 · Chen et al. · 2007 [cited by applicant]
US 20070191378A1 · Campbell et al. · 2007 [cited by applicant]
US 20070208166A1 · Baly et al. · 2007 [cited by applicant]
US 20090048226A1 · Wannamaker et al. · 2009 [cited by applicant]
US 20110301188A1 · Shankar et al. · 2011 [cited by applicant]
US 20120015962A1 · Arora et al. · 2012 [cited by applicant]
US 20120108562A1 · Chen et al. · 2012 [cited by applicant]
EP 1291341A1 · 2003 [cited by applicant]
EP 1291341A4 · 2003 [cited by applicant]
JP 2007527412A · 2007 [cited by applicant]
WO WO2005040355A2 · 2005 [cited by applicant]
WO WO2005040355A3 · 2005 [cited by applicant]
WO WO2005117867A2 · 2005 [cited by applicant]
WO WO2005117867A3 · 2005 [cited by applicant]
WO WO2012004554A1 · 2012 [cited by applicant]
WO WO2012173677A2 · 2012 [cited by applicant]
WO WO2012173677A3 · 2012 [cited by applicant]
WO WO2015129860A1 · 2015 [cited by applicant]
Buckner, J.C. et al. (Oct. 2007). “Central nervous system tumors,” [cited by applicant]
Capdeville, R. et al. (Jul. 2002). “Glivec (STI571, imatinib), a rationally developed, targeted anticancer drug,” [cited by applicant]
Chemical Abstract Registry No. 1295611-89-0, indexed in the Registry File on STN CAS Online May 16, 2011, 1 page. [cited by applicant]
Chemical Abstract Registry No. 1298989-51-1, indexed in the Registry File on STN CAS Online May 22, 2011, 1 page. [cited by applicant]
Chu, J.S. et al. (Sep. 25, 1998). “Proliferating cell nuclear antigen (PCNA) immunolabeling as a prognostic factor in invasive ductal carcinoma of the breast in Taiwan,” [cited by applicant]
Ducoux, M. et al. (Dec. 28, 2001, e-published Oct. 10, 2001). “Mediation of proliferating cell nuclear antigen (PCNA)-dependent DNA replication through a conserved p21(Cip1)-like PCNA-binding motif present in the third … [cited by applicant]
Extended European Search Report mailed on Feb. 15, 2019, for EP Patent Application No. 16847479.9, 7 pages. [cited by applicant]
Friesner, R.A. et al. (Oct. 19, 2006). “Extra precision glide: docking and scoring incorporating a model of hydrophobic enclosure for protein-ligand complexes,” [cited by applicant]
Gavett, S.H. et al. (Nov. 1, 1995). “Interleukin 12 inhibits antigen-induced airway hyperresponsiveness, inflammation, and Th2 cytokine expression in mice,” [cited by applicant]
Grivennikov, S.I. et al. (Mar. 19, 2010). “Immunity, inflammation, and cancer,” [cited by applicant]
Gu, L. et al. (Apr. 11, 2014). “A PCNA-derived cell permeable peptide selectively inhibits neuroblastoma cell growth,” [cited by applicant]
Hoelz, D.J. et al. (Sep. 2006). “The discovery of labile methyl esters on proliferating cell nuclear antigen by MS/MS,” [cited by applicant]
International Search Report mailed on Dec. 12, 2016, for PCT Application No. PCT/US2016/052310, filed Sep. 16, 2016, 7 pages. [cited by applicant]
Ito, N et al. (Jan. 2003). “A Medium-Term Rat Liver Bioassay for Rapid in Vivo Detection of Carcinogenic Potential of Chemicals,” [cited by applicant]
Lehmann, B.D. et al. (Jul. 2011). “Identification of human triple-negative breast cancer subtypes and preclinical models for selection of targeted therapies,” [cited by applicant]
Malkas, L.H. et al. (Dec. 19, 2006, e-published Dec. 11, 2006). “A cancer-associated PCNA expressed in breast cancer has implications as a potential biomarker,” PNAS USA 103(51):19472-19477. [cited by applicant]
Mayer, M. et al. (Jun. 27, 2001). “Group epitope mapping by saturation transfer difference NMR to identify segments of a ligand in direct contact with a protein receptor,” [cited by applicant]
Müller, R. et al. (Jul. 31, 2013). “Targeting proliferating cell nuclear antigen and its protein interactions induces apoptosis in multiple myeloma cells,” [cited by applicant]
Münch, G. et al. (May 2003, e-published Mar. 5, 2003). “Microglial activation induces cell death, inhibits neurite outgrowth and causes neurite retraction of differentiated neuroblastoma cells,” [cited by applicant]
Nurden, A.T. (May 2011, e-published Apr. 11, 2011). “Platelets, inflammation and tissue regeneration,” [cited by applicant]
Phillips, J.C. et al. (Dec. 2005). Scalable molecular dynamics with NAMD, [cited by applicant]
PUBCHEM CID: 16794268, CTK6A1088, (Nov. 13, 2007). located at <http://pubchem.ncbi.nlm.nih.gov/compound/16794268> retrieved Nov. 3, 2016, 9 pages. [cited by applicant]
Punchihewa, C. et al. (Apr. 20, 2012, e-published Mar. 1, 2012). “Identification of small molecule proliferating cell nuclear antigen (PCNA) inhibitor that disrupts interactions with PIP-box proteins and inhibits DNA re… [cited by applicant]
Raschle, M. et al. (Sep. 19, 2008). “Mechanism of replication-coupled DNA interstrand crosslink repair,” [cited by applicant]
Scott, H.R. et al. (Jul. 29, 2002). “The systemic inflammatory response, weight loss, performance status and survival in patients with inoperable non-small cell lung cancer,” [cited by applicant]
Shen, F. et al. (Mar. 2011). “Nuclear protein isoforms: implications for cancer diagnosis and therapy,” [cited by applicant]
Shibata, A. et al. (Mar. 16, 2011, e-published Feb. 11, 2011). “Factors determining DNA double-strand break repair pathway choice in G2 phase,” [cited by applicant]
Strzalka, W. et al. (May 2011, e-published Dec. 17, 2010). “Proliferating cell nuclear antigen (PCNA): a key factor in DNA replication and cell cycle regulation,” [cited by applicant]
Stoimenov, I. et al. (Jun. 2009). “PCNA on the crossroad of cancer,” [cited by applicant]
Tan, Z. et al. (Jun. 2012, e-published Mar. 7, 2012). “Small-molecule targeting of proliferating cell nuclear antigen chromatin association inhibits tumor cell growth,” [cited by applicant]
Wang, J.L. et al. (Apr. 1, 2004). “Predictive significance of the alterations of p16INK4A, p14ARF, p53, and proliferating cell nuclear antigen expression in the progression of cervical cancer,” [cited by applicant]
Wang, X. et al. (May 15, 2011, e-published Oct. 28, 2010). “Elevated expression of cancer-associated proliferating cell nuclear antigen in high-grade prostatic intraepithelial neoplasia and prostate cancer,” [cited by applicant]
Warbick, E. et al. (May 5, 1997). “Homologous regions of Fen1 and p21Cip1 compete for binding to the same site on PCNA: a potential mechanism to co-ordinate DNA replication and repair,” [cited by applicant]
Written Opinion mailed on Dec. 12, 2016, for PCT Application No. PCT/US2016/052310, filed Sep. 16, 2016, 40 pages. [cited by applicant]
Yu, Y.L. et al. (Apr. 8, 2013). “Targeting the EGFR/PCNA signaling suppresses tumor growth of triple-negative breast cancer cells with cell-penetrating PCNA peptides,” [cited by applicant]
Zhang, Y. et al. (Jun. 1, 2004). “Intravenous RNA interference gene therapy targeting the human epidermal growth factor receptor prolongs survival in intracranial brain cancer,” [cited by applicant]
Zhao, H. et al. (2011). “Targeting Tyrosine Phosphorylation of PCNA Inhibits Prostate Cancer Growth,” [cited by applicant]