Compositions and methods for targeted delivery of CRISPR-Cas effector polypeptides and transgenes
The present disclosure provides virus-like particles (VLPs) comprising: i) a CRISPR-Cas effector polypeptide; ii) a recombinant lentivirus comprising a nucleotide sequence encoding a therapeutic polypeptide having a length of from about 250 amino acids to about 3,000 amino acids, where the VLP comprises a pseudotyping viral glycoprotein and/or a polypeptide that provides for binding to a target cell. The present disclosure provides systems for producing a VLP. The present disclosure provides methods of delivering a therapeutic protein, using a VLP of the present disclosure.
1 . A virus-like particle (VLP) comprising:
a) a Cas9 polypeptide, wherein the Cas9 polypeptide is present inside of the VLP as both:
(i) a Gag-Cas9 fusion polypeptide, wherein the Cas9 polypeptide is linked to the C-terminus of a Gag polyprotein through a cleavable linker between the Gag polyprotein and the Cas9 polypeptide; and
(ii) a proteolytically released form following proteolytic cleavage of the cleavable linker;
b) a Pol polyprotein;
c) lentiviral structural components comprising:
(i) a matrix (MA) polypeptide;
(ii) a capsid (CA) polypeptide; and
(iii) a nucleocapsid (NC) polypeptide;
d) a recombinant lentiviral vector comprising a nucleotide sequence encoding a therapeutic polypeptide selected from the group consisting of: a chimeric antigen receptor (CAR), a T-cell receptor, s synNotch polypeptide, a natural killer cell receptor, and an antibody; and
e) a pseudotyping viral glycoprotein; and optionally
f) a polypeptide that provides for binding to a target cell.
2 . The VLP of claim 1 , wherein the therapeutic polypeptide has a length of from about 500 amino acids to about 2,500 amino acids.
3 . The VLP of claim 1 , wherein the pseudotyping viral glycoprotein is a human immunodeficiency virus-1 envelope protein, a measles virus hemagglutinin, an HTLV-1 glycoprotein, or a VSV-G glycoprotein.
4 . The VLP of claim 1 , wherein the polypeptide that provides for binding to a target cell is an antibody or a designed ankyrin repeat protein (DARPin).
5 . A composition comprising the VLP of claim 1 .
6 . The VLP of claim 1 , wherein the CAR comprises an antigen-binding domain specific for a cancer-associated antigen.
7 . The VLP of claim 1 , wherein the Cas9 polypeptide is fused to one or more nuclear localization signals at the C-terminus of the Cas9 polypeptide.
8 . The VLP of claim 1 , comprising one or more CRISPR/Cas guide RNAs each comprising a nucleotide sequence that is complementary to a sequence of a target nucleic acid.
9 . The VLP of claim 1 , wherein the recombinant lentivirus further comprises one or more nucleotide sequences, each operably linked to a U6 promoter, that encode one or more CRISPR/Cas guide RNAs.
10 . The VLP of claim 8 , wherein the one or more CRISPR/Cas guide RNAs comprises:
(a) a CRISPR/Cas guide RNA targeting a beta-2-microglobulin (B2M) gene; or
(b) a CRISPR/Cas guide RNA targeting a T-cell receptor a constant (TRAC) gene; or
(c) both (a) and (b).
11 . The VLP of claim 9 , wherein the one or more CRISPR/Cas guide RNAs comprises:
(a) a CRISPR/Cas guide RNA targeting a B2M gene; or
(b) a CRISPR/Cas guide RNA targeting a TRAC gene; or
(c) both (a) and (b).
12 . The VLP of claim 1 , wherein at least 50% of the Cas9 polypeptide present inside of the VLP is in the form of the Gag-Cas9 fusion polypeptide relative to the proteolytically released form.
13 . The VLP of claim 1 , wherein the Gag polyprotein of the Gag-Cas9 fusion polypeptide comprises an HIV-1 Gag polyprotein, the Pol polyprotein comprises an HIV-1 Pol polyprotein, and the lentiviral structural components comprise HIV-1 lentiviral structural components.
14 . The VLP of claim 1 , wherein more than 50% of the lentiviral structural components are from the Gag polyprotein of the Gag-Cas9 fusion polypeptide.
15 . The VLP of claim 1 , wherein the polypeptide that provides for binding to the target cell is present.
16 . The VLP of claim 15 , wherein the target cell is a T cell.
17 . The VLP of claim 8 , wherein the nucleotide sequence encoding the therapeutic polypeptide is flanked by homology regions, wherein each homology region is between 10-200 nucleotides in length and at least 50% homologous to corresponding nucleotide sequences flanking the sequence of the target nucleic acid.
18 . The VLP of claim 8 , wherein the sequence of the target nucleic acid is a genomic sequence.
19 . A VLP comprising:
a) a Cas9 polypeptide, wherein the Cas9 polypeptide is present inside of the VLP as both:
(i) a Gag-Cas9 fusion polypeptide, wherein the Cas9 polypeptide is linked to the C-terminus of an HIV-1 Gag polyprotein through an HIV-1 protease cleavage site between the HIV-1 Gag polyprotein and the Cas9 polypeptide; and
(ii) a proteolytically released form following proteolytic cleavage of the HIV-1 protease cleavage site;
b) an HIV-1 Pol polyprotein;
c) HIV-1 lentiviral structural components comprising:
(i) a MA polypeptide;
(ii) a CA polypeptide; and
(iii) a NC polypeptide;
d) a recombinant lentiviral vector comprising a nucleotide sequence encoding a CAR;
e) a pseudotyping viral glycoprotein;
f) a polypeptide that provides for binding to a T cell; and
g) one or more CRISPR/Cas guide RNAs comprising:
(a) a CRISPR/Cas guide RNA targeting a B2M gene; or
(b) a CRISPR/Cas guide RNA targeting a TRAC gene; or
(c) both (a) and (b).
20 . The VLP of claim 19 , wherein at least 50% of the Cas9 polypeptide present inside of the VLP is in the form of the Gag-Cas9 fusion polypeptide relative to the proteolytically released form.
21 . The VLP of claim 19 , wherein the pseudotyping viral glycoprotein is a HIV-1 envelope protein, a measles virus hemagglutinin, an HTLV-1 glycoprotein, or a VSV-G glycoprotein.
22 . The VLP of claim 19 , wherein the polypeptide that provides for binding to the T cell is an antibody or a DARPin.
23 . A composition comprising the VLP of claim 19 .
24 . The VLP of claim 19 , wherein the CAR comprises an antigen-binding domain specific for a cancer-associated antigen.
25 . The VLP of claim 19 , wherein the Cas9 polypeptide is fused to one or more nuclear localization signals at the C-terminus of the Cas9 polypeptide.
26 . The VLP of claim 19 , wherein the recombinant lentiviral vector further comprises one or more nucleotide sequences, each operably linked to a U6 promoter, that encode one or more CRISPR/Cas guide RNAs.
27 . The VLP of claim 19 , wherein the nucleotide sequence encoding the CAR is flanked by homology regions corresponding to nucleotide sequences flanking a sequence of the B2M gene targeted by the one or more CRISPR/Cas guide RNAs or a sequence of the TRAC gene targeted by the one or more CRISPR/Cas guide RNAs.
28 . The VLP of claim 19 , wherein the B 2 M gene or the TRAC gene is a genomic sequence.
29 . A VLP comprising:
a) a Cas9 polypeptide, wherein the Cas9 polypeptide is present inside of the VLP as both:
(i) a Gag-Cas9 fusion polypeptide, wherein the Cas9 polypeptide is linked to the C-terminus of an HIV-1 Gag polyprotein through an HIV-1 protease cleavage site between the HIV-1 Gag polyprotein and the Cas9 polypeptide; and
(ii) a proteolytically released form following proteolytic cleavage of the HIV-1 protease cleavage site;
b) an HIV-1 Pol polyprotein;
c) HIV-1 lentiviral structural components comprising:
(i) a MA polypeptide;
(ii) a CA polypeptide; and
(iii) a NC polypeptide;
d) a CRISPR/Cas guide RNA targeting a genomic sequence of a TRAC gene;
e) a recombinant lentiviral vector comprising a nucleotide sequence encoding a CAR, wherein the CAR comprises an antigen-binding domain specific for a cancer-associated antigen, wherein the nucleotide sequence encoding the CAR is flanked by homology regions corresponding to nucleotide sequences flanking a sequence of the TRAC gene targeted by the one or more CRISPR/Cas guide RNAs;
f) a pseudotyping viral glycoprotein; and
g) a polypeptide that provides for binding to a T cell, wherein the polypeptide that provides for binding to the T cell is an antibody.
30 . The VLP of claim 29 , wherein at least 50% of the Cas9 polypeptide present inside of the VLP is in the form of the Gag-Cas9 fusion polypeptide relative to the proteolytically released form.
31 . The VLP of claim 29 , wherein the pseudotyping viral glycoprotein is a HIV-1 envelope protein, a measles virus hemagglutinin, an HTLV-1 glycoprotein, or a VSV-G glycoprotein.
32 . A composition comprising the VLP of claim 29 .
33 . The VLP of claim 29 , wherein the Cas 9 polypeptide is fused to one or more nuclear localization signals at the C-terminus of the Cas9 polypeptide.