RESEARCH: CANCER
FOLDING PROJECT #15228 PROFILE

This project looks at how PTCH1 moves cholesterol in cells. PTCH1 stops cancer-causing signals when it has enough cholesterol. If PTCH1 doesn't work right, cancers like medulloblastoma and basal cell carcinoma can grow. Understanding this process could lead to new cancer treatments.

Note: This TLDR is a simplication and may not be 100% accurate.

This project aims to elucidate the cholesterol transport mechanism in PTCH1, a transmembrane protein responsible for inhibiting SMO in the absence of SHH in the hedgehog signaling pathway by reducing access to ciliary membrane cholesterol.

Dysregulation of this pathway (such as the inability of PTCH1 to transport cholesterol and thereby inhibit SMO) has been linked to various cancers, including medulloblastoma and basal cell carcinoma.

Thus, understanding the mechanisms behind PTCH1 cholesterol transport will allow for therapeutic treatments to target these cancers.

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PTCH1

Patched 1: A transmembrane protein.

PTCH1 is a key protein in the Hedgehog signaling pathway. It acts as a receptor for Sonic hedgehog (SHH) and regulates cholesterol transport. Dysfunction of PTCH1 can lead to cancer development.

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SMO

Smoothened

SMO is a protein that functions downstream of PTCH1 in the Hedgehog pathway. It acts as a signal transducer, promoting cell proliferation and differentiation.

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SHH

Sonic Hedgehog

SHH is a signaling molecule that binds to PTCH1, initiating the Hedgehog pathway. It plays crucial roles in development and tissue homeostasis.

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Cholesterol

A type of fat (lipid) essential for cell membranes and various biological processes.

Cholesterol is a vital component of cell membranes, influencing their fluidity and stability. It's also involved in hormone synthesis and other metabolic functions.

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Transmembrane Protein

A protein spanning the cell membrane.

Transmembrane proteins are embedded within the cell membrane. They play diverse roles, including transporting molecules, receiving signals, and anchoring cells.

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Ciliary Membrane

The membrane surrounding cilia, hair-like structures on some cells.

Cilia are microscopic projections found on the surface of many cells. The ciliary membrane is a specialized lipid bilayer that forms the outer boundary of these structures.

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Cancer

A disease characterized by uncontrolled cell growth.

Cancer is a group of diseases where abnormal cells grow and spread uncontrollably. This can lead to the formation of tumors and damage to surrounding tissues.

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Medulloblastoma

A type of brain cancer originating in the cerebellum.

Medulloblastoma is a highly aggressive childhood brain tumor that arises from cells in the cerebellum. It often requires intensive treatment.

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Basal Cell Carcinoma

A common type of skin cancer.

Basal cell carcinoma is the most prevalent type of skin cancer. It usually appears as a pearly or waxy bump on sun-exposed areas.