NON-INVASIVE IMAGING METHODS FOR PATIENT SELECTION FOR TREATMENT WITH NANOPARTICULATE THERAPEUTIC AGENTS
Methods for providing treatment of pathologic conditions with nanoparticulate therapeutic agents are disclosed. Novel methods for determining liposomal deposition at sites of pathology using non-invasive imaging are also disclosed.
1 . A method for selecting and providing pharmaceutical treatment to a patient for a localized infectious, inflammatory, or neoplastic condition, the method comprising:
diagnosing a localized infectious, inflammatory, or neoplastic condition in a patient and
identifying one or more locations of infection, inflammation or neoplasia in the patient,
and subsequently,
obtaining a first contrast-enhanced MRI image of a first location of the one or more locations,
and subsequently,
selecting an anti-infective, anti-inflammatory, or anti-neoplastic pharmaceutical agent and treating the patient with the selected pharmaceutical agent;
wherein,
the first contrast-enhanced MRI image is obtained following administration of an MRI contrast agent comprising an MRI contrast-enhancing amount of superparamagnetic iron oxide nanoparticles of about 15-30 nm in diameter, and
if the first contrast-enhanced MRI image shows contrast enhancement within the first location, the selected pharmaceutical agent is an agent that is formulated as nanoparticles or nanoliposomes of about 70 to about 200 nm in diameter, but
if the first contrast-enhanced MRI image does not show contrast enhancement at first location, the selected pharmaceutical agent is an agent that is not formulated as nanoparticles or nanoliposomes of about 70 to about 200 nm in diameter.
2 . The method of claim 1 , wherein the contrast agent is ferumoxytol.
3 . The method of claim 2 , wherein the ferumoxytol is administered at 5 mg/kg.
4 . The method of claim 2 , wherein the patient is an adult and 100-1000 milligrams of ferumoxytol are administered to the patient.
5 . The method of claim 2 , wherein the patient is an adult and 510 milligrams of ferumoxytol are administered to the patient.
6 . The method of claim 1 , wherein the contrast-enhanced MRI image is obtained no more than 24, 48, 72, 96, 120, 144 or 168 hours after administration of the superparamagnetic iron oxide nanoparticles.
7 . The method of claim 1 , wherein the contrast-enhanced MRI image is obtained from 24-48, 48-72, 72-96, 96-120, 120-144, or 144 to 168 hours after administration of the superparamagnetic iron oxide nanoparticles.
8 . A method for selecting and providing pharmaceutical treatment to a patient for a localized infectious, inflammatory, or neoplastic condition, the method comprising:
diagnosing a localized infectious, inflammatory, or neoplastic condition in a patient and
identifying one or more locations of infection, inflammation or neoplasia in the patient,
and subsequently,
obtaining a first contrast-enhanced MRI image of a first location of the one or more locations,
obtaining a second contrast-enhanced MRI image of a second location of the one or more locations,
and subsequently,
selecting an anti-infective, anti-inflammatory, or anti-neoplastic pharmaceutical agent and treating the patient with the selected pharmaceutical agent;
wherein,
the first and second contrast-enhanced MRI images are obtained following administration of an MRI contrast agent comprising an MRI contrast-enhancing amount of superparamagnetic iron oxide nanoparticles of about 15-30 nm in diameter, and
if both the first and the second contrast-enhanced MRI images show contrast enhancement within both the first location and second location, the selected pharmaceutical agent is an agent that is formulated as nanoparticles or nanoliposomes of about 70 to about 200 nm in diameter, but
if both the first and the second contrast-enhanced MRI images do not show contrast enhancement within both the first location and second location, the selected pharmaceutical agent is an agent that is not formulated as nanoparticles or nanoliposomes of about 70 to about 200 nm in diameter.
9 . The method of claim 8 , wherein the contrast agent is ferumoxytol and 1) is administered at 5 mg/kg, or 2) is administered to an adult patient at a dosage of 100-1000 milligrams, or 3) is administered to an adult patient at a dosage of 510 milligrams.
10 . The method of claim 1 , wherein the MRI image is obtained using a magnetic field strength of 1-10 Tesla or about 1.5 Tesla, or about 3 Tesla.
11 . The method of claim or claim 1 , wherein the liposomal therapeutic agent comprises liposomes of an average size of about 100 nm in diameter with an average range of about 75 to about 200 nm or of about 80 to about 120 nm.
12 . The method of claim 1 , wherein the liposomal therapeutic agent is MM-398.
13 . The method of claim 1 , wherein the liposomal therapeutic agent is MM-302.
14 . The method of claim 1 , wherein the first contrast-enhanced MRI image shows contrast enhancement within the first location, the neoplastic condition comprises at least one tumor and the pharmaceutical agent is a liposomal anti-neoplastic agent.
15 . The method of claim 14 wherein the tumor is a non-small cell lung cancer (NSCLC) tumor, a triple negative breast cancer (TNBC) tumor, a colorectal cancer (CRC) tumor, a pancreatic cancer tumor, a small cell lung cancer tumor, a gastric cancer tumor, a cervical cancer tumor, or Ewing's sarcoma and the selected pharmaceutical agent is a liposomal formulation of irinotecan.
16 . The method of claim 15 wherein the liposomal formulation of irinotecan is MM-398 (irinotecan sucroseoctasulfate liposome injection).
17 . The method of claim 14 wherein the liposomal anti-neoplastic agent is liposomal doxorubicin.
18 . The method of claim 17 wherein the liposomal doxorubicin comprises antibody-targeted doxorubicin liposomes.
19 . The method of claim 18 wherein the antibody-targeted doxorubicin liposomes are targeted with an anti-HER2 antibody.