Invention Grant
- Patent Title: Inducible CRISPR system expression and applications thereof
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Application No.: US17491738Application Date: 2021-10-01
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Publication No.: US11643672B2Publication Date: 2023-05-09
- Inventor: Hoshang Jehangir Unwalla , Srinivasan Chinnapaiyan
- Applicant: Hoshang Jehangir Unwalla , Srinivasan Chinnapaiyan
- Applicant Address: US FL Miami
- Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTERS
- Current Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTERS
- Current Assignee Address: US FL Miami
- Agency: Saliwanchik, Lloyd & Eisenschenk
- Main IPC: C12N9/22
- IPC: C12N9/22 ; C12N15/11 ; C12N15/85 ; C12N15/90

Abstract:
The invention pertains to an inducible CRISPR system for controlling expression of a CRISPR complex with an inducible fusion promoter. One embodiment of the invention provides HIV LTR-minimal Drosophila hsp70 fusion promoter that can be used for inducible co-expression of gRNA and Cas9 in HIV-infected cells to target cellular cofactors such as Cyclin T1. A single introduction of such embodiment leads to sustained suppression of HIV replication in stringent, chronically infected HeLa-CD4 cell lines as well as in T-cell lines. In another embodiment, the invention further relates to enhancement of HIV suppression by incorporating cis-acting ribozymes immediately upstream of the gRNA in the inducible CRISPR system construct. The inducible fusion promoter is adaptable for other tissue- or cell-type specific expression of the inducible CRISPR system.
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