ISDA

Deposition Date 2023-01-31

Release Date 2023-10-18

Last Version Date 2024-11-06

Entry Detail

PDB ID:

8G0M

Keywords:

TRANSPORT PROTEIN

Title:

Structure of complex between TV6.6 and CD98hc ECD

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)
synthetic construct (Taxon ID: 32630)

Host Organism:

Homo sapiens

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.25 Å

R-Value Free:

0.24

R-Value Work:

0.20

Space Group:

C 2 2 21

Download Validation Report

Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:4F2 cell-surface antigen heavy chain
Gene (Uniprot):SLC3A2
Chain IDs:A
Chain Length:425
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P08195 Pfam ID:PF00128

Polymer Type:polypeptide(L)
Molecule:TV 6.6 Fc fragment
Chain IDs:B
Chain Length:227
Number of Molecules:1
Biological Source:synthetic construct

Ligand Molecules

EDO

PG4

Primary Citation

CD98hc is a target for brain delivery of biotherapeutics.

Chew, K.S, Wells, R.C, Moshkforoush, A, Chan, D, Lechtenberg, K.J, Tran, H.L, Chow, J, Kim, D.J, Robles-Colmenares, Y, Srivastava, D.B, Tong, R.K, Tong, M, Xa, K, Yang, A, Zhou, Y, Akkapeddi, P, Annamalai, L, Bajc, K, Blanchette, M, Cherf, G.M, Earr, T.K, Gill, A, Huynh, D, Joy, D, Knight, K.N, Lac, D, Leung, A.W, Lexa, K.W, Liau, N.P.D, Becerra, I, Malfavon, M, McInnes, J, Nguyen, H.N, Lozano, E.I, Pizzo, M.E, Roche, E, Sacayon, P, Calvert, M.E.K, Daneman, R, Dennis, M.S, Duque, J, Gadkar, K, Lewcock, J.W, Mahon, C.S, Meisner, R, Solanoy, H, Thorne, R.G, Watts, R.J, Zuchero, Y.J.Y, Kariolis, M.S, Chew, K.S, Wells, R.C, Moshkforoush, A, Chan, D, Lechtenberg, K.J, Tran, H.L, Chow, J, Kim, D.J, Robles-Colmenares, Y, Srivastava, D.B, Tong, R.K, Tong, M, Xa, K, Yang, A, Zhou, Y, Akkapeddi, P, Annamalai, L, Bajc, K, Blanchette, M, Cherf, G.M, Earr, T.K, Gill, A, Huynh, D, Joy, D, Knight, K.N, Lac, D, Leung, A.W, Lexa, K.W, Liau, N.P.D, Becerra, I, Malfavon, M, McInnes, J, Nguyen, H.N, Lozano, E.I, Pizzo, M.E, Roche, E, Sacayon, P, Calvert, M.E.K, Daneman, R, Dennis, M.S, Duque, J, Gadkar, K, Lewcock, J.W, Mahon, C.S, Meisner, R, Solanoy, H, Thorne, R.G, Watts, R.J, Zuchero, Y.J.Y, Kariolis, M.S.Show

Nat Commun 14 5053 5053 (2023)

PMID: 37598178 DOI: 10.1038/s41467-023-40681-4

Abstact

Brain exposure of systemically administered biotherapeutics is highly restricted by the blood-brain barrier (BBB). Here, we report the engineering and characterization of a BBB transport vehicle targeting the CD98 heavy chain (CD98hc or SLC3A2) of heterodimeric amino acid transporters (TVCD98hc). The pharmacokinetic and biodistribution properties of a CD98hc antibody transport vehicle (ATVCD98hc) are assessed in humanized CD98hc knock-in mice and cynomolgus monkeys. Compared to most existing BBB platforms targeting the transferrin receptor, peripherally administered ATVCD98hc demonstrates differentiated brain delivery with markedly slower and more prolonged kinetic properties. Specific biodistribution profiles within the brain parenchyma can be modulated by introducing Fc mutations on ATVCD98hc that impact FcγR engagement, changing the valency of CD98hc binding, and by altering the extent of target engagement with Fabs. Our study establishes TVCD98hc as a modular brain delivery platform with favorable kinetic, biodistribution, and safety properties distinct from previously reported BBB platforms.

Legend

Protein

Chemical

Disease

Primary Citation of related structures